Bi-directional power supplies
Normal standard DC power supplies operate in one quadrant; a positive voltage and a positive current. Unipolar power supplies differ from a “normal” DC power supply because they can operate in two quadrants.
With a bi-directional power supply (also called a unipolar power supply), we must then make an additional distinction regarding power supplies with a positive current and positive or negative voltage and power supplies with a positive voltage and positive or negative current.
A bi-directional power supply with a positive current and positive or negative voltage is used, for example, as an amplifier for a function generator or as a power supply for a photo multiplier.
The second form (with a positive voltage and positive or negative current) is more common nowadays. As a battery charger/discharger, for example. Or for testing bi-directional dc inverters (Electric car industry), driving DC motors (because of the counter EMK) or as a battery emulator.
Our range of bi-directional DC power supplies varies from small, high-precision power supplies (0-20V and ± 0-3A) of 60W to complete high-power systems of up to megaW.
Voltages from 0-10V to 0-2250V and currents from a few A to in the 20,000A and more.
And that from different manufacturers.
Besides bi-directional power supplies (two quadrant power supplies), TTMS also has an extensive range of four quadrant power supplies, also called bipolar power supplies.
Let us know your application and we will help you select the best solution for your application.
